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312-734

You are reviewing the Area Code (NPA/NXX) report for 312-734. Did you mean to search the SMS short code 312734?

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Examples: 206-739-5800, 206, 206-739, 48369

🇺🇸 DSN NORTHCOM Area Code Detected

The area code you entered, 312, overlaps with the DSN network for the Continental United States and Puerto Rico under Northern Command (NORTHCOM), though it could also be part of standard civilian phone numbers.

Raw Number312734
Basic Format312-734
NPA (Area Code)312
NXX734

Call Routing Data

NPA-NXX-XOCNCompanyRate CenterUse TypeAssign DateCityStateRegionBlock Effective Date
312-734-0XXX5562METROPCS, INC.CHICGOZN01AS11/11/2015CHICAGO ZONE 01ILMW12/05/2015
312-734-1XXX224CONVOY, LLCCHICGOZN01AS11/10/2015CHICAGO ZONE 01ILMW11/25/2015
312-734-2XXX7136TELEPORT COMMUNICATIONS AMERICA, LLC - ILCHICGOZN01AS09/21/2015CHICAGO ZONE 01ILMW11/01/2015
312-734-3XXX7136TELEPORT COMMUNICATIONS AMERICA, LLC - ILCHICGOZN01AS09/21/2015CHICAGO ZONE 01ILMW11/01/2015
312-734-4XXX7136TELEPORT COMMUNICATIONS AMERICA, LLC - ILCHICGOZN01AS09/21/2015CHICAGO ZONE 01ILMW11/01/2015
312-734-5XXX7136TELEPORT COMMUNICATIONS AMERICA, LLC - ILCHICGOZN01AS09/21/2015CHICAGO ZONE 01ILMW11/01/2015
312-734-6XXX7136TELEPORT COMMUNICATIONS AMERICA, LLC - ILCHICGOZN01AS09/21/2015CHICAGO ZONE 01ILMW11/01/2015
312-734-7XXX7136TELEPORT COMMUNICATIONS AMERICA, LLC - ILCHICGOZN01AS09/21/2015CHICAGO ZONE 01ILMW11/01/2015
312-734-8XXX7136TELEPORT COMMUNICATIONS AMERICA, LLC - ILCHICGOZN01AS09/21/2015CHICAGO ZONE 01ILMW11/01/2015
312-734-9XXX5562METROPCS, INC.CHICGOZN01AS11/11/2015CHICAGO ZONE 01ILMW12/05/2015
312-734-XXXX7136TELEPORT COMMUNICATIONS AMERICA, LLC - ILCHICGOZN01AS09/17/2015CHICAGO ZONE 01IL

Reports

Anonymous User from Fort Myers, Illinois

April 14, 2026 at 10:56 AM

312-734-4191 reported as a Live Voice or Other. Received on April 14, 2026 at 10:50 AM.

Anonymous User from Worth, Illinois

February 24, 2026 at 12:41 PM

312-734-4259 reported as a Robocall. Received on February 23, 2026 at 9:41 AM.
Call for No Subject Provided

Anonymous User from Worth, Illinois

February 24, 2026 at 12:32 PM

312-734-4259 reported as a Robocall. Received on February 23, 2026 at 9:41 AM.

Anonymous User from , IL

September 12, 2025 at 5:42 PM

312-734-3237 reported as a Robocall. Received on September 12, 2025 at 4:42 PM.
Call for Medical & prescriptions

Anonymous User from , FL

August 20, 2025 at 11:05 AM

312-734-5031 reported as a unwanted call. Received on August 18, 2025 at 10:38 AM.
Call for No Subject Provided

Anonymous User from Chicago, Illinois

August 7, 2025 at 8:35 PM

312-734-9691 reported as a Live Voice or Other. Received on August 7, 2025 at 4:41 PM.
Call for Reducing your debt (credit cards, mortgage, student loans)

Anonymous User from Libertyville, Illinois

August 1, 2025 at 1:18 PM

312-734-1509 reported as a Live Voice or Other. Received on August 1, 2025 at 11:17 AM.

Anonymous User from Berwyn, Illinois

July 25, 2025 at 1:51 PM

312-734-8385 reported as a Robocall. Received on July 24, 2025 at 3:44 PM.
Call for Reducing your debt (credit cards, mortgage, student loans)

Anonymous User from , IL

July 24, 2025 at 3:09 PM

312-734-6582 reported as a Robocall. Received on July 23, 2025 at 12:33 PM.

Anonymous User from Libertyville, Illinois

June 28, 2025 at 9:21 AM

312-734-4621 reported as a Live Voice or Other. Received on June 27, 2025 at 6:20 PM.

Anonymous User from Libertyville, Illinois

May 19, 2025 at 5:51 PM

312-734-8262 reported as a Live Voice or Other. Received on May 19, 2025 at 1:50 PM.
Call for Medical & prescriptions

Anonymous User from Chicago, Illinois

May 2, 2025 at 1:20 PM

312-734-1065 reported as a Robocall. Received on May 2, 2025 at 11:27 AM.
Call for Dropped call or no message

Anonymous User from , IL

November 12, 2024 at 1:32 PM

312-734-6423 reported as a Robocall. Received on November 12, 2024 at 12:24 PM.

Anonymous User from Bonham, Texas

September 12, 2024 at 10:52 AM

312-734-9696 reported as a Robocall. Received on September 12, 2024 at 9:48 AM.

Anonymous User from , IL

April 26, 2024 at 12:27 PM

312-734-5128 reported as a unwanted call. Received on April 26, 2024 at 10:30 AM.
Call for No Subject Provided

Anonymous User from , IL

April 25, 2024 at 1:00 PM

312-734-8532 reported as a Robocall. Received on April 25, 2024 at 11:19 AM.
Call for Medical & prescriptions

Anonymous User from Wheeling, Illinois

March 8, 2024 at 10:53 AM

312-734-6582 reported as a Robocall. Received on February 12, 2024 at 5:42 PM.
Call for Dropped call or no message

Anonymous User from Des Plaines, Illinois

May 13, 2023 at 2:18 PM

312-734-9870 reported as a unwanted call. Received on May 12, 2023 at 6:33 PM.

Anonymous User from Bridgeview, Illinois

March 23, 2023 at 12:41 PM

312-734-9583 reported as a Robocall. Received on March 22, 2023 at 4:56 PM.
Call for Reducing your debt (credit cards, mortgage, student loans)

Anonymous User from , NY

July 7, 2017 at 3:45 PM

None reported as a Prerecorded Voice. Received on July 7, 2017 at 11:25 AM.
Unwanted call for unknown
Caller ID indicated they called from 312-734-3387
Contacted via Wired

Most 'popular' numbers on this prefix:

312-734-3XXX: 312-734-3300 | 312-734-3330 | 312-734-3333 | 312-734-3380 | 312-734-3383 | 312-734-3388 |
312-734-5XXX: 312-734-5100 | 312-734-5120 | 312-734-5123 | 312-734-5125 | 312-734-5150 |
312-734-6XXX: 312-734-6400 | 312-734-6401 | 312-734-6420 | 312-734-6421 | 312-734-6423 | 312-734-6500 | 312-734-6501 | 312-734-6507 | 312-734-6580 | 312-734-6581 | 312-734-6585 |
312-734-8XXX: 312-734-8500 | 312-734-8501 | 312-734-8530 | 312-734-8533 |
312-734-9XXX: 312-734-9500 | 312-734-9520 | 312-734-9550 | 312-734-9580 | 312-734-9585 | 312-734-9588 | 312-734-9600 | 312-734-9650 | 312-734-9660 | 312-734-9690 | 312-734-9699 | 312-734-9800 | 312-734-9801 | 312-734-9820 | 312-734-9870 | 312-734-9874 | 312-734-9877 |